ES2874625T3 - Uplink Common Burst Symbol Settings - Google Patents

Abstract

A method (1900) for wireless communication, comprising: identifying (1905) an uplink common burst symbol for transmission of one or more types of information in an autonomous wireless communication subframe; determining (1910) one or more types of information to be transmitted in the uplink common burst symbol; select (1915) one of a single carrier frequency division multiplexing, SCFDM, transmission waveform, an orthogonal frequency division multiplexing, OFDM, transmission waveform, or a mixed SCFDM transmission waveform and OFDM for transmission of the uplink common burst symbol based at least in part on the one or more types of information to be transmitted in the uplink common burst symbol, wherein when the waveform is selected For transmission of the uplink common burst symbol, the transmission comprises selecting a sequence (505) from a set of sequences (505, 510, 515, 520) based at least in part on information to be transmitted. to be transmitted in the uplink common burst symbol, said sequence (505) identifying said information, and wherein the different sequences of the set of sequences (505, 510, 515, 520) correspond nden to different cyclic shifts of a basic sequence; and transmitting the uplink common burst symbol.

Description

DESCRIPTION

Uplink Common Burst Symbol Settings

Introduction

[0001] The following description refers generally to wireless communication and more specifically to uplink common burst symbol configuration.

[0002] Wireless communication systems are widely implemented to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems can be multiple access systems that can support communication with multiple users by sharing available system resources (eg, time, frequency, and power). Examples of such multiple access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, and frequency division multiple access systems. Orthogonal Frequency Division (OFDMA).

[0003] In some examples, a multiple access wireless communication system may include a number of base stations, each simultaneously supporting communication for multiple communication devices, otherwise known as user equipment (UE). In a long-term evolution (LTE) or advanced LTE (LTE-A) network, a set of one or more base stations can define an eNodeB (eNB). In other examples (for example, in a next generation or 5G network), a multiple access wireless communication system may include a number of intelligent radio heads (Radio Heads (RH)) in communication with a number of radio controllers. access node (ANC), where a set of one or more radio heads, in communication with an ANC, defines an eNB. A base station or radio head can communicate with a set of UEs on downlink (DL) channels (for example, for transmissions from a base station or radio head to a UE) and on uplink channels ( UL) (for example, for transmissions from a UE to a base station or radio head).

[0004] The communication subframes between a network access device (for example, an eNB, an ANC, an RH or a base station) and a plurality of UEs can include different regions or channels that are assembled according to a time division duplexing (TDD) and / or a frequency division duplexing (FDD) subframe structure. The subframes may additionally or alternatively include arrangements of UL channels and / or DL channels. In subframes that include UL and DL channels, the processing times for determining and formatting uplink data may pose difficulties for some UEs.

[0005] QUALCOMM INCORPORATED document: "Scaled Numerology Control Design for NR", 3GPP DRAFT; R1-166363_SCALED NUMEROLOGY CONTROL DESIGN FOR NR, THIRD GENERATION COLLABORATION PROJECT (3GPP), vol. RAN WG1, nA Gothenburg, Sweden; 20160822 - 20160826, Aug 21, 2016 (08-21-2016), XP051140183, discloses a self-contained subframe including UL and DL channels and analyzes the transmission of uplink control information in it.

Brief explanation

[0006] A wireless communication method is described from the perspective of a UE device as defined in claim 1, and from the perspective of a network access device as defined in claim 12.

Corresponding apparatus are described as defined in claims 14, 15, respectively. Other aspects of the invention are described in accordance with the attached dependent claims.

Brief description of the drawings

[0008] The nature and advantages of the present disclosure will be better understood with reference to the following drawings. In the accompanying figures, similar components or functions may have the same reference label. Additionally or alternatively, various components of the same type can be distinguished by postponing to the reference tag a hyphen and a second tag that differentiates between similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label, regardless of the second reference label.

FIG. 1 illustrates an example system for wireless communication that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure.

FIG. 2 illustrates an example wireless communication system that supports a common burst symbol configuration in accordance with one or more aspects of the present disclosure.

FIG. 3A illustrates an example subframe associated with a DL-centered dynamic subframe type that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure.

FIG. 3B illustrates an example subframe associated with a UL-centered dynamic subframe type that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure.

FIG. 4 illustrates an example of sequence detection using cyclic shifts from in accordance with one or more aspects of the present disclosure.

FIG. 5 illustrates an example of SC-FDM sequences in accordance with one or more aspects of the present disclosure.

FIG. 6 illustrates an example channel estimation in an uplink common burst symbol in accordance with one or more aspects of the present disclosure.

FIG. 7 illustrates an example of coherent energy combining in an uplink common burst symbol in accordance with one or more aspects of the present disclosure.

FIG. 8 illustrates an example of fractional cyclic shift in accordance with one or more aspects of the present disclosure.

FIG. 9 illustrates an example of a mixed waveform in an uplink common burst symbol in accordance with one or more aspects of the present disclosure.

FIG. 10 illustrates an example of a sequence determination that provides information in a trailing part of a symbol in accordance with one or more aspects of the present disclosure.

FIGS. 11-13 show block diagrams of a device that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. FIG. 14 illustrates a block diagram of a system that includes a UE that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. FIGS. 15-17 show block diagrams of a device that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. FIG. 18 illustrates a block diagram of a system that includes a base station that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure.

FIGS. 19-25 illustrate procedures for an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure.

Detailed description

[0009] Techniques are described in which the uplink common burst transmissions in a subframe are configured as a single uplink symbol. Next-generation networks (for example, 5G or new radio (NR) networks) are being designed to support features such as high-bandwidth operations, more dynamic subframe types, and autonomous subframe types (in which feedback from Hybrid Automatic Repeat Request (HARQ) for a subframe may be transmitted before the end of the subframe). In autonomous subframes, an uplink common burst symbol can be used at the end of a subframe to transmit various types of information, such as an SRS, a scheduling request (SR), acknowledgment / negative acknowledgment information HARQ (ACK / NACK), uplink data, or combinations thereof. The type of information to be provided in the uplink common burst symbol is used to determine a waveform for the symbol. In some cases, a stream transmitted on the uplink bussy symbol may be selected to provide ACK / NACK information only in a final part of the uplink busstroke symbol, which may provide additional processing time for a UE processes a downlink transmission and determines the ACK / NACK information.

[0010] A waveform for the uplink common burst symbol is selected to be a single carrier frequency division multiplexing (SC-FDM) waveform, an OFDM waveform, or combinations thereof, based on the information to be transmitted in the uplink common burst symbol. The SC-FDM waveform can be selected when SRS, SR, HARQ feedback, or combinations thereof are to be transmitted. The OFDM waveform can be selected when uplink data is to be transmitted. A mixed waveform can be selected when uplink data and other information is to be transmitted. In some examples, a pattern for SC-FDM sequences can be selected to provide an improved channel estimate through common pilot tones in different sequences. Additionally, the broadband or narrowband SC-FDM sequences are selected based on the information to be transmitted.

[0011] Aspects of the disclosure are initially described in the context of a wireless communication system. Aspects of the disclosure are illustrated and described in more detail with reference to apparatus diagrams, system diagrams, and flowcharts that refer to an uplink common burst symbol configuration.

[0012] FIG. 1 illustrates an example wireless communication system 100 in accordance with one or more aspects of the present disclosure. The wireless communication system 100 may include base stations 105 (for example, gNodeBs (gNB)), UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be an LTE network, of LTE-A or NR. The wireless communication system 100 supports autonomous subframes in which a waveform is selected for an uplink common burst symbol based on some types of information to be transmitted, such as an SRS, SR, feedback from HARQ, uplink data, or combinations thereof.

The wireless communication system 100 may include base stations 105, UEs 115, and a core network 130. The core network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and others. access, routing or mobility functions. At least some of the base stations 105 (eg eNB 105-a or ANC 105-b) can interact with core network 130 via backhaul links 132 (eg S1, S2, etc.) and can perform radio configuration and planning for communication with UE 115. In various examples, ANC 105-b can communicate with each other, either directly or indirectly (for example, via core network 130), via of return links 134 (eg, X1, X2, etc.), which may be wired or wireless communication links. Each ANC 105-b can also communicate with a number of UE 115 through a number of intelligent RHs 105-c in a coverage area 110. In an alternative configuration of the wireless communication system 100, the functionality of an ANC 105 -b can be provided by an RH 105-c or distributed among the RH 105-c of an eNB 105-a. In another alternative configuration of the wireless communication system 100, the RH 105-c can be replaced by base stations, and the ANC 105-b can be replaced by base station controllers (or links to the core network 130).

[0014] A macrocell can cover a relatively large geographical area (for example, a radius of several kilometers) and can allow unrestricted access by UE 115s with subscriptions to the service with a network provider. A small cell can include a radio head or a base station of lower power than a macro cell, and can operate in a frequency band (s) equal to or different from the one (s) of the macrocells. Small cells can include picocells, femtocells, and microcells, according to various examples. A picocell can cover a relatively smaller geographical area and can allow unrestricted access by UE 115s with service subscriptions with a network provider. A femto cell can also cover a relatively small geographic area (for example, a home) and can provide restricted access by UE 115 that have an association with the femto cell (for example, Closed Subscriber Group (CSG) UEs, UE for home users and the like). An eNB for a macrocell can be called a macro-eNB. An eNB for a small cell can be referred to as a small cell eNB, pico-eNB, femto-eNB, or domestic eNB. An eNB can support one or multiple (eg, two, three, four, and the like) cells (eg, component carriers).

The wireless communication system 100 can support synchronous or asynchronous operation. For synchronous operation, the eNB 105-a and / or RH 105-c may have similar frame timing, and the transmissions from different eNB 105-a and / or RH 105-c may be roughly aligned in time. For asynchronous operation, the eNB 105-a and / or RH 105-c may have different frame timings, and the transmissions from different eNB 105-a and / or radio heads 105-c may not be time aligned. The techniques described herein can be used for synchronous or asynchronous operations.

[0016] Communication networks that may incorporate some of the various disclosed examples may be packet-based networks operating in accordance with a layered protocol stack. At the user plane, packet data convergence protocol (PDCP) or bearer layer communications may be IP-based. A radio link control layer (RLC) can in some cases perform packet segmentation and reassembly for communication over logical channels. A medium access control (MAC) layer can perform priority management and logical channel multiplexing in transportation channels. The MAC layer can also use HARQ to provide retransmission at the MAC layer to improve link efficiency. In the control plane, the radio resource control protocol (RRC) layer can provide the establishment, configuration and maintenance of an RRC connection between a UE 115 and a RH 105-c, an ANC 105-bo a core network 130 that supports radio bearers for user plane data. At the physical layer (PHY), transport channels can be mapped to physical channels.

[0017] UE 115 can be dispersed throughout the wireless communication system 100, and each UE 115 can be fixed or mobile. A UE 115 may also include or be referred to by those skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or with some other suitable term. A UE 115 can be a cell phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a tablet computer, a laptop, a cordless phone, a local loop station wireless (WLL), an Internet of Everything (IoE) device, or the like. A UE could communicate with various types of eNB 105-a, RH 105-c, base stations, access points, or other base stations, including macro-eNBs, small cell eNBs, relay base stations, and the like. A UE could also communicate directly with other UEs (for example, using a peer-to-peer (P2P) protocol).

The communication links 125 displayed in the wireless communication system 100 may include UL channels from a UE 115 to a RH 105-c, and / or DL channels, from a RH 105-c to a UE 115. DL channels can also be called forward link channels, while UL channels can also be called reverse link channels. The information and control data can be multiplexed into a UL channel or a DL channel according to various techniques. The information and control data can be multiplexed onto a DL channel, for example, using time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques.

One or more of the base stations 105 (eg, one or more eNB 105-a) may include a base station wireless communication manager 101. In some examples, the base station wireless communication manager 101 may be an example of the base station communications manager 1815 described with reference to FIGS. 15-18, and is used to identify a set of transmit waveforms available for an uplink common burst symbol, each transmit waveform of the set of transmit waveforms being associated with different information that is displayed. is going to transmit on the uplink common burst symbol. The base station wireless communication manager 101 is also used to receive the uplink common burst symbol from a UE 115, determine the transmission waveform of the uplink common burst symbol, and determine the information included in the symbol. uplink common burst based at least in part on the determined transmit waveform of the uplink common burst symbol.

One or more of the UE 115 may include a UE 102 wireless communication manager. In some examples, the UE 102 wireless communication manager may be an example of the UE 1415 communication manager described with reference to FIGS. . 11-14, and is used to select a transmit waveform for the uplink common burst symbol based at least in part on the information to be transmitted in the uplink common burst symbol. The UE wireless communication manager 102 can also be used to determine feedback information (eg, HARQ ACK / NACK feedback) and identify a sequence for the transmission of the feedback information so that the feedback information is localized. in a final part of the uplink common burst symbol.

[0021] Each communication link 125 can include one or more carriers, where each carrier can be a signal made up of multiple subcarriers (for example, waveform signals of different frequencies) modulated according to one or more access technologies by radio. Each modulated signal can be sent on a different subcarrier and can carry control information (eg, reference signals, control channels, etc.), overload information, user data, etc. Communication links 125 can transmit bi-directional communications using FDD techniques (eg, using paired spectrum resources) or TDD (eg, using unpaired spectrum resources). Frame structures can be defined for FDD (eg a type 1 frame structure) and TDD (eg a type 2 frame structure).

[0022] In some examples of the wireless communication system 100, the RH 105-c and / or the UE 115 may include multiple antennas to employ antenna diversity systems to improve the quality and reliability of communication between the RH 105-c and the UE 115. Additionally or alternatively, the RH 105-c and / or the UE 115 may employ multiple input multiple output (MIMO) techniques that can take advantage of multipath environments to transmit multiple spatial layers carrying the same or encoded data. different.

[0023] Wireless communication system 100 may support multi-cell or carrier operation, a feature that may be referred to as carrier aggregation (CA) or multi-carrier operation. A carrier can also be called a component carrier (CC), layer, channel, etc. The terms "carrier", "component carrier", "cell" and "channel" may be used interchangeably herein. A UE 115 may be configured with a DL multiple DC AC and one or more UL DCs. AC can be used with DC from FDD and TDD.

[0024] FIG. 2 illustrates an example wireless communication system 200 for uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. The wireless communication system 200 may include a base station 105-a and a UE 115-a, which may be examples of corresponding devices described with reference to FIG. 1. The wireless communication system 200 uses a communication configuration that includes uplink-centric subframes and downlink-centric subframes that include an uplink common burst symbol that is transmitted in an uplink transmission 210.

[0025] As noted above, an uplink common burst symbol can include various types of information, such as an SRS, an SR, feedback information, uplink data, or any combination thereof. In some cases, an uplink common burst transmission 210 may be divided into two symbol halves, where each divided symbol has a double pitch spacing and a half cyclic prefix (CP) length. In such examples, the first symbol half can be used for an SRS and an SR, and the second symbol half can be used for feedback information and uplink data (for example, uplink shared physical channel data ( PUSCH)). In such cases, the UE 115-a may use the first symbol half as an additional response time during which feedback information can be determined. Various aspects of the present disclosure provide an uplink common burst transmission 210 that includes a one symbol pattern. Such a design of a symbol may allow a normal CP to be used, which can provide better mitigation of interference and increase the probability of success in receiving the uplink burst transmission 210. Various aspects of the disclosure provide a Additional or alternative techniques for waveform selection and sequence selection that can support multiplexing and transmission of information using SC-FDM and OFDM waveforms. For example, an SC-FDM sequence can be used for the transmission of one or more SRS, SR or feedback information, and an OFDM waveform can be used for the transmission of uplink data. Additionally, in some examples, sequences may be provided to allow the UE 115-a to provide feedback information in a final part of the uplink burst symbol (for example, in a second half of the uplink burst symbol), which may allow the UE 115-a to use an initial part of the uplink burst symbol to process downlink transmissions, determine feedback, and format feedback for transmission.

[0026] Base station 105-a may include a base station wireless communication manager 201, which may be an example of the base station wireless communication manager 101 of FIG. 1, and is used to identify a set of transmit waveforms available for an uplink common burst symbol, each transmit waveform of the set of transmit waveforms being associated with different information to be transmitted on the uplink common burst symbol. The base station wireless communication manager 201 is further used to receive the uplink common burst symbol in the uplink transmission 210 from the UE 115-a, determine the transmission waveform of the link common burst symbol uplink and determining the information included in the uplink bus symbol based at least in part on the determined transmission waveform of the uplink bus symbol.

The UE 115-a may include a UE 202 wireless communication manager, which may be an example of a UE 102 wireless communication manager of FIG. 1, and is used to select a transmit waveform for the uplink common burst symbol based at least in part on the information to be transmitted in the uplink common burst symbol. The UE 202 wireless communication manager may be used additionally or alternatively to determine feedback information (eg, HARQ ACK / NACK feedback) and identify a sequence for transmission of the feedback information such that the information The feedback loop is located at a trailing portion of the uplink common burst symbol.

[0028] FIG. 3A illustrates an example subframe associated with a DL-centered dynamic subframe type 300 in accordance with one or more aspects of the present disclosure. In some examples, a base station such as a base station 105 of FIGS. 1-2 may select the type of DL-centered dynamic subframe for subframe 305, based at least in part on a UL / DL traffic ratio. For example, a base station may select a DL-centric dynamic subframe type for subframe 305 when the UL / DL traffic ratio indicates that the base station has queued more traffic for transmission to one or more UEs than the that the one or more UEs have queued for transmission to the base station. In some examples, Base stations and UEs communicating in subframe 305 may be examples of aspects of base stations 105 and UE 115 described with reference to FIGS. 1-2.

[0029] Subframe 305 may begin with a DL control region 310, which may be transmitted on a physical downlink control channel (PDCCH) in one or more symbols of subframe 305. After the control region of DL 310, the base station may schedule a data region 315, which may include downlink shared physical channel (PDSCH) transmissions. After data region 315, a guard period 320 may be provided to allow the UE to perform radio frequency (RF) switching from downlink receptions to uplink transmissions. After the guard period 320, an uplink common burst symbol 325 is scheduled for transmission by the UE of information such as an SRS, an SR, feedback (eg ACK / NACK information) or uplink data. . Such a common uplink burst symbol 325 may allow for an autonomous subframe 305, in which feedback on the successful reception of data in data region 315 can be provided within the same subframe, which may allow for lower latency and improved data throughput in relation to the provision of feedback information, in a number of subframes after data region 315, to the base station.

[0030] FIG. 3B illustrates an example subframe associated with a UL 350 centered dynamic subframe type in accordance with one or more aspects of the present disclosure. In some examples, a base station such as a base station 105 of FIGS. 1-2 may select the type of UL-centered dynamic subframe for subframe 355, based at least in part on a UL / DL traffic ratio. For example, a base station may select a UL-centric dynamic subframe type for subframe 355 when the UL / DL traffic ratio indicates that the UE has queued more traffic for transmission than it has queued. the base station for transmission to the UE. In some examples, the base stations and UEs communicating in subframe 355 may be examples of aspects of the base stations 105 and UEs 115 described with reference to FIGS. 1-2.

[0031] Subframe 355 may start with a DL 360 control region, which may be transmitted in a PDCCH transmission in one or more symbols of subframe 355. After DL 360 control region, a guard period 365 to allow the UE to perform RF switching from downlink receptions to uplink transmissions. After the guard period 365, the base station may schedule a data region 370, which may include PUSCH transmissions and / or an uplink control physical channel (PUCCH) transmission. After data region 370, an uplink common burst symbol 375 is scheduled for the UE to transmit information such as an SRS, SR or uplink data.

[0032] As noted above, the uplink common burst symbol 325 of FIG. 3A and the uplink common burst symbol 375 of FIG. 3B are a single symbol that a UE transmits to provide various types of information to the base station. To transmit information to a base station, a UE selects a waveform for the uplink common burst symbol 325 and the uplink common burst symbol 375 based on the type of information to be transmitted. In some examples, an SC-FDM waveform can be selected when SRS, SR, feedback information, or combinations thereof are to be transmitted. Additionally, in some examples, an OFDM waveform can be selected when uplink data is to be transmitted. In some cases, when both uplink data and one or more than one SRS, SR, or feedback information are to be provided, a mixed waveform of SC-FDM and OFDM can be used for the common burst symbol of uplink 325 and uplink common burst symbol 375.

[0033] A base station can configure, for example, a UE to select a waveform based on the information to be provided in the uplink common burst symbol 325 and the uplink common burst symbol 375 In some examples, when SRS, SR, or feedback information is to be provided, a base station may configure the UE to use some sequences of the SC-FDM waveform to indicate transmitted information. For example, if the UE is to provide SRS transmissions, a broadband transmission may be desirable to provide sufficient SRS information to the base station. However, if only SR or feedback information is to be provided, a wideband transmission may not be necessary as enough information can be transmitted in a narrowband transmission. In some examples, a broadband transmission may use subcarriers that span a full transmission bandwidth (for example, 80 MHz) for communications between the base station and the UE, and a narrowband transmission may use subcarriers that they cover only a part (for example, 20 MHz) of the transmission bandwidth.

[0034] In cases where broadband transmissions are used to transmit information in the uplink common burst symbol, a number of predetermined sequences can be provided that the base station can detect and use to determine the transmitted information. Table 1 below provides an example of different SC-FDM broadband streams that can be used to transmit some types of information. For example, the base station can use an SRS for channel estimation, and the Base station can monitor transmissions across the broadband transmission bandwidth. The SR information may include a zero if no SR is present, or a one if there is a UE SR. The feedback information may include a one to indicate an ACK of a downlink transmission, a negative one to indicate a NACK of the downlink transmission, or discontinuous transmission (DTX) if no feedback is provided (for example, if the UE has not received a feedback resource grant). In the example of Table 1, six different sequences can be provided for the SC-FDM waveform, and the base station, after detecting the particular transmitted sequence, can determine the information transmitted by the UE.

In the example of Table 1, when the information to be transmitted is SR + ACK, a sequence of five can alternatively be added when DTX and SR include one. In one example, when the information to be transmitted is SRS + SR + ACK, a sequence of three and a sequence of six can be removed if DTX detection is not required on the receiver side. In this example, the number of sequences can be four. In some cases, when DTX detection is not required on the receiver side, the sequence corresponding to NACK (ACK = negative one) will be transmitted when DTX is present on the transmitter side. In another example, there may be two bits of ACK information. In one example, the number of streams can be four for ACK transmission alone, and eight for ACK + SR transmission without DTX detection, when SR is one. In that example, the number of sequences can be nine for ACK + SR transmission with DTX detection, when SR is one. In one example, the number of sequences can be eight for SRS + SR + ACK if DTX detection is not required on the receiver side, and the number of sequences can be ten if DTX detection is required on the receiver side. receiver side.

Table 1- SC-FDM Broadband Sequences

[0036] In other examples, one or more narrowband transmissions may be used to transmit information in an uplink common burst symbol. Said differences in bandwidth for transmissions can be used, in some examples, as an indicator of whether the UE is transmitting an SRS or not. Table 2 below provides an example of different broadband and narrowband SC-FDM sequences that can be used to transmit some types of information. For example, the base station may use an SRS for channel estimation, and the base station may monitor the transmissions of the entire broadband transmission bandwidth, which may indicate the presence of an SRS. If an SRS is not transmitted, an SR and feedback information can be transmitted using narrowband SC-FDM sequences. Similarly, as discussed above, the SR information may include a zero if there is no SR present, or one if there is an SR from the UE. The feedback information may include a one to indicate an ACK of a downlink transmission, a negative one to indicate a NACK of the downlink transmission, or DTX if no feedback is provided (for example, if the UE has not obtained a granting feedback resources). In the example in Table 2, four different narrowband SC-FDM sequences and six different wideband SC-FDM sequences can be provided for the SC-FDM waveform, and after detecting the particular transmitted sequence, the base station determines the information transmitted by the UE. The narrow band resource can be different sequences in the same frequency band or the same sequences in different frequency bands.

[0037] In an example where SR + ACK is included in the information to be transmitted, a narrow band sequence N5 can be added alternatively when DTX and SR are one. In the example, where SRS + SR + ACK is included in the information to be transmitted, a W3 sequence and a W6 sequence if DTX detection is not required on the receiver side. In this case, the number of sequences can be four. In some examples, when DTX detection is not required on the receiver side, the sequence corresponding to NACK (ACK = negative one) can be transmitted if there is DTX on the transmitter side. In another example, there may be two bits of ACK information. In some examples, for ACK transmission alone, the number of sequences can be four. In some examples, for ACK + SR transmission without DTX detection when SR = one, the number of sequences can be eight. In some examples, for ACK + SR transmission with DTX detection when SR = one, the number of sequences can be nine. In some examples, if DTX detection on the receiver side is not required for SRS + SR + ACK, the number of sequences can be eight. In some examples, if DTX detection on the receiver side is required for SRS + SR + ACK, the number of sequences can be ten.

Table 2- SC-FDM Narrowband and Wideband Sequences

[0038] The particular sequence transmitted by a UE is detected at the base station. Transmitted sequences are configured to allow sequence detection through cyclic offsets applied to a received transmission. Cyclic offsets can be achieved at the base station, for example, by setting an IDFT to transform the received uplink common burst symbol from frequency domain to time domain and selecting different taps of the IDFT output to provide different offsets. cyclics of a basic sequence.

[0039] FIG. 4 illustrates an example of sequence detection using cyclic offsets 400 for an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. In some examples, the base stations and UEs that communicate using the sequences may be examples of aspects of the base stations 105 and UEs 115 described with reference to FIGS. 1-2.

[0040] In the example of FIG. 4, the base station can use energy detection, in which an energy 405 can be detected for different hypotheses for the received sequence, a hypothesis with the highest energy being selected as the detected sequence. In FIG. 4, a first cyclic shift (n cyclic shift) and 410 a second cyclic shift (n + 1 cyclic shift) 415 may be applied to the received transmission. Although the example of FIG. 4 shows the cyclic shifts n and n + 1, the values of the cyclic shifts can be any numbers, which are not necessarily consecutive. Hypotheses can use a frequency domain correlation with a basic sequence and IDFT with time domain, where different hypotheses can be in different takes of the IDFT component. An energy from each tap can be added for each hypothesis, and the hypothesis with the highest energy in the detected sequence can be identified. In some examples, the base station can use history and filtering to improve the time domain estimation, and the channel estimation based on the detected sequence can be used for future filtering.

[0041] As noted above, different sequences are used to indicate information transmitted in an uplink common burst symbol. FIG. 5 illustrates an example of SC-FDM 500 sequences for the configuration of an uplink common burst symbol in accordance with one or more aspects of this disclosure. The SC-FDM sequences are used for uplink common burst transmissions between the UEs 115 and base stations 105 of FIGS. 1 and 2, for example. In this example, a first sequence 505 is a basic sequence in the frequency domain. A second sequence 510 corresponds to a cyclic shift of N / 2 (where N is the sequence length). In another example, the first sequence uses a first cyclic shift between 0 and N-1, the second sequence uses a second cyclic shift as the first N / 2 cyclic shift, modulated by N. Said N / 2 cyclic shift in the domain of time results in an alternate sign change in the frequency domain, as indicated in FIG. 5. Therefore, for the hypothesis test with two sequences, the transmission is essentially a coherent transmission, with every two tones forming a known pilot. In cases where four sequences can be tested, a third sequence 515 and a fourth sequence 520 can correspond to N / 4 cyclic shifts of the basic sequence 505. For example, the two sequences can use the cyclic shifts X, (X + N / 4) mod N, (X + N / 2) mod N and (X + 3N / 4) mod N, where the first cyclic shift X can be any number between 0 and N-1. Thus, in the case of 4 sequences, with every four tones in the frequency domain a known pilot can be provided, such as a known first pilot 525 and a known second pilot 530 in FIG. 5. Although in FIG. 5 some cyclic displacement distances N / 2 and N / 4 are illustrated, these properties can be applied additionally or alternatively to another cyclic displacement distance of N / M, where M is the number of sequences, and each M tones in the frequency domain can be used as a pilot.

[0042] Said common pilot tones can be used for channel estimation, even in the event that an incorrect hypothesis is selected. Such channel estimation can allow improved sequence detection, and a base station can estimate a channel based on a known pilot that can serve as a reference. For example, a base station can estimate the uplink channel used for the uplink common burst symbol with only the identified pilot tones. Such estimation may include performing an FFT on the received signal, extracting N / M pilot tones in the frequency domain, performing an IDFT with a N / M size, windowing and thresholding the IDFT output, and performing a discrete transform of Fourier (DFT) with size N. For two sequences, the channel can be estimated using alternating tones and then the other demodulated tones based on the channel estimate. For four, the channel can be estimated using the tones four at a time (eg, first known pilot 525 and second known pilot 530 of FIG. 5). The base station can perform a coherent combination of four-tone blocks in the frequency domain based on the estimated channel, and then perform an IDFT with size 4, and can identify a detected sequence based on the highest tap output of the IDFT.

[0043] In some examples, a time domain fallback can be used for channel estimation and enhanced sequence detection. FIG. 6 illustrates an example channel estimation 600 using time domain fallback in accordance with one or more aspects of the present disclosure. The channel estimate 600 can be used for uplink common burst transmissions between the UEs 115 and the base stations 105 of FIGS. 1 and 2, for example. In this example, a first group of snapshots 605 and a second group of snapshots 610 can generate time-domain samples. Time domain fallback can be used to improve sequence detection. In this example, a base station can receive an uplink common burst transmission and perform an FFT on the received signal and extract all N usable tones. The base station can perform an N-size IDFT, perform a time domain fallback to N / M shots, perform windowing and thresholding, add zero padding to N shots, and then perform a DFT with a size N. The block of M tones can be coherently combined with the estimated channel followed by an IDFT of size M and the hypothesis with the highest combined tap energy identified as the detected sequence. Time domain fallback can be accomplished, for example, by dividing the N IDFT taps into N / M groups and adding the same taps in each group. Such addition can result in increased noise due to the addition of the shots and the preserved resolution. In some examples, different weights can be used when adding groups. For example, the first group of shots 605 (x) may have a first weight 615 (a), and the second group of shots 610 (y) may have a second weight 620 (p). The aggregate group 625 (z) may have calculated tap values based on the weights, such that zi = axi py,. If equal weights are given to the first tap group 605 and the second tap group 610, then both a and p can be equal to one. If one group is trusted more than another group, for example, if the second group of 610 shots is trusted more, then p may be greater than one and / or a may be less than one. Although, of course, only two tap groups are illustrated, it will be readily understood that any number of tap groups can be used.

[0044] In some examples, a coherent energy combination can be used for channel estimation and enhanced sequence detection. FIG. 7 illustrates an example coherent energy combination 700 for an uplink common burst symbol in accordance with one or more aspects of the present disclosure. The coherent energy combination 700 can be used for uplink common burst transmissions between the UEs 115 and the base stations 105 of FIGS. 1 and 2, for example. In this example, an IDFT of N / 2 705 can be applied to a received transmission, which can provide socket outputs 710. An IDFT of N 715 can be applied to the received transmission that can provide socket outputs 720, and is can estimate a time domain channel in a manner similar to that discussed above with respect to FIGS.

5-6. The energy of each of the tap outputs 720 can then be weighted by the estimated channel before combining. Such coherent combining can provide processing gains relative to techniques that do not use coherent combining.

[0045] FIG. 8 illustrates an example fractional shift 800 for an uplink common burst symbol in accordance with one or more aspects of the present disclosure. As discussed above, in some examples, the feedback information may include an ACK / NACK indication as well as a DTX indication. Therefore, three sequences are needed to indicate the feedback information. In the example of FIG. 8, a first sequence 805 may be a basic sequence, a second sequence 810 may have a N / 3 shift applied in the frequency domain, and a third sequence 815 may have a 2N / 3 shift applied in the frequency domain. the frequency (for example, equivalent to a spread of DFT3). Such applied frequency domain shifts result in a time domain signal that has fractional shifts (for example, a sequence length N of 16 with three assumptions results in a shift of 16/3, which is not a integer shift in time domain). Therefore, said sequence selection allows a maximum and equal distance for the three hypotheses and, for three sequences, every three tones form a DFT3 matrix and has a known pilot. Although three sequences are illustrated in FIG. 8, such techniques can be used for any sequence length and any number of sequences.

[0046] In cases where uplink data is to be provided, as discussed above, an OFDM waveform can be used for uplink common burst symbol transmission. In cases where uplink data, an SRS, an SR or feedback information is to be provided, a mixed waveform of SC-FDM and OFDM can be used. FIG. 9 illustrates an example mixed waveform in an uplink common burst symbol 900 in accordance with one or more aspects of the present disclosure. The uplink common burst symbol 900 can be used for uplink common burst transmissions between the UEs 115 and the base stations 105 of FIGS. 1 and 2, for example. In this example, the uplink common burst symbol 900 may include a number of tones 905. In this example, the even tones may support broadband sequence transmissions as discussed above with respect to FIGS. 2-8. The odd tones of the number of tones 905 can be transmitted using an OFDM waveform, to transmit uplink data. The OFDM waveform may include data tones 915 and DMRS tones 920, in this example. If no SRS is to be transmitted in the uplink common burst symbol 900, data tones 915 may be transmitted in assigned odd tones, for example, such as in a narrowband transmission as indicated in FIG. 9. The base station can use the DMRS 920 tones, which can include SR information in the payload, for demodulation. If an SRS is to be transmitted on the uplink common burst symbol 900, the UE may transmit SRS tones 910 in even tones. The base station may additionally or alternatively use the SRS 910 tones to estimate the uplink channel, as discussed above. In such cases, a DMRS may or may not be necessary, and it may be transmitted based on a configuration provided to the UE by the base station. Although the example of FIG. 9 shows SRS 910 tones in even tones, and data tones 915 and DMRS 920 tones in odd tones, such a configuration is exemplary only, and other frequency resources may contain the different tones. Furthermore, in some examples, SR information may be transmitted in a data payload of a data tone 915 if data is present, and feedback information may be transmitted in the data payload or modulated in a DMRS.

[0047] As discussed above, the use of a single symbol in the uplink common burst symbol can pose processing difficulties for a UE that may need to determine feedback information for a downlink transmission before transmitting the uplink symbol. uplink common burst. FIG. 10 illustrates an example sequence determination 1000 that provides information in a trailing part of a symbol in accordance with one or more aspects of the present disclosure. Sequence determination 1000 can be used for uplink common burst transmissions between UEs 115 and base stations 105 of FIGS. 1 and 2, for example. In this example, a UE may not be able to provide feedback information on an uplink common burst symbol based on timing constraints associated with the start of uplink common burst symbol transmissions. Using the sequence determination 1000, a sequence can be identified that creates zeros in the leading part of the uplink common burst symbol, and allows feedback information to be transmitted in the final part of the uplink common burst symbol. Such a technique can allow the UE to finish processing and generate feedback information that can be provided in the uplink common burst symbol. In some examples, a base station can configure the use of said sequence based on a capacity of the UE. In some examples, the UE may identify a sub-matrix of FFT samples corresponding to a final part of the symbol duration, identify a set of vectors associated with the sub-matrix of FFT samples, and format the feedback associated with the downlink transmission into the vector set.

[0048] The sequence can be determined, in the example of FIG. 10, determining that the initial part of the uplink bus symbol (N / 2 in this example) is to include time domain samples that are zeros 1005, and that the final part of the uplink bus symbol has to include time domain samples that include 1010 feedback information. Said sample configuration in time domain creating zeros 1005 and feedback information 1010 can be the result of an inverse fast Fourier transform (IFFT) matrix applied to a vector, such that the null parts 1015 and the non-zero parts 1017 of the matrix IFFT and corresponding null parts 1020 and non-zero parts 1025 (having M non-zero tones) of the vector produce the desired time domain samples. This corresponds to the zero parts 1030 and the non-zero parts 1035 of an FFT matrix applied to the desired time domain samples that are zeros 1005 and the time domain feedback information 1010 to provide a frequency domain vector with parts of zero (or near zero) 1020 and parts of non-zero 1025. A submatrix 1040 of the non-zero parts 1035 of the FFT matrix can be identified corresponding to an FFT of M x N / 2 that can be applied to the N / 2 x 1 time domain samples to identify the null parts 1020, and which can be used additionally or alternatively to identify the M x 1 frequency domain vectors for the non-zero parts 1025.

[0049] In some examples, transmissions with such sequences may have an empty CP. In case N / 2 is greater than M and M is greater than or equal to the number of guard tones, a broadband transmission may be required. In some examples, a different set of time domain samples or equivalent frequency domain vectors for the non-zero parts may be used to indicate payload or provide SRS or SR information. In other examples, the UE may be configured not to transmit an SRS or SR in cases where feedback information is provided using sequences such as those determined in the example of FIG. 10.

[0050] FIG. 11 shows a block diagram 1100 of a device 1105 that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. Device 1105 may be an example of aspects of a UE 115 as described with reference to FIG. 1. Device 1105 may include a receiver 1110, a UE communications manager 1115, and a transmitter 1120. Device 1105 may also include a processor. Each of these components can be in communication with each other (for example, by means of one or more buses).

The receiver 1110 can receive information such as packets, user data, or control information associated with various information channels (eg, control channels, data channels, and information related to the configuration of the link common burst symbol). ascending, etc.). Information can be passed to other components of the device. Receiver 1110 may be an example of aspects of transceiver 1435 described with reference to FIG. 14.

The UE communication manager 1115 may be an example of aspects of the UE communication manager 1415 described with reference to FIG. 14. UE communication manager 1115 identifies an uplink common burst symbol in a wireless communication subframe, determines the information to be transmitted in the uplink common burst symbol, and selects a transmission waveform for the uplink bus symbol based on the information to be transmitted in the uplink bus symbol. The UE communication manager 1115 may additionally or alternatively identify an uplink common burst symbol in a wireless communication subframe for feedback transmission associated with a downlink transmission in the wireless communication subframe, the symbol having uplink common burst a symbol duration with a start part and an end part, identify a sub-matrix of FFT samples corresponding to the end part of the symbol duration, identify a set of vectors associated with the sub-matrix of FFT samples and formatting the feedback associated with the downlink transmission in the vector set.

[0053] Transmitter 1120 can transmit signals generated by other components of the device. In some examples, the transmitter 1120 may be co-located together with a receiver 1110 on a transceiver module. For example, transmitter 1120 may be an example of aspects of transceiver 1435 described with reference to FIG. 14. Transmitter 1120 may include a single antenna, or it may include a set of antennas.

[0054] FIG. 12 shows a block diagram 1200 of a device 1205 that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. Device 1205 may be an example of aspects of a device 1105 or UE 115 as described with reference to FIGS. 1 and 11. Device 1205 may include a receiver 1210, a UE communications manager 1215, and a transmitter 1220. Device 1205 may also include a processor. Each of these components can be in communication with each other (for example, by means of one or more buses).

The receiver 1210 may receive information such as packets, user data, or control information associated with various information channels (eg, control channels, data channels, and information related to the configuration of the link common burst symbol). ascending, etc.). Information can be passed to other components of the device. Receiver 1210 may be an example of aspects of transceiver 1435 described with reference to FIG. 14.

[0056] The UE 1215 communication manager may be an example of aspects of the communication manager of UE 1415 described with reference to FIG. 14. The UE 1215 communication manager may also include a UL 1225 common burst component, a UL 1230 information component, a 1235 waveform select component, a 1240 FFT component, a vectors 1245 and a feedback component 1250.

[0057] The common burst component of UL 1225 can identify an uplink common burst symbol in a wireless communication subframe. The uplink common burst symbol can be used for the feedback transmission associated with a downlink transmission in the wireless communication subframe, the transmission of SRS, SR, uplink data, or any combination thereof. The uplink common burst symbol may have a symbol duration with a leading part and a trailing part.

[0058] The information component of UL 1230 can determine the information to be transmitted in the uplink common burst symbol. In some cases, the UL 1230 information component may determine that the information to be transmitted in the uplink common burst symbol includes one or more of SRS information, SR information, or feedback information associated with a transmission. downlink. In some cases, the SR information includes an indication of whether an SR is present, and the feedback information includes an acknowledgment indication, a negative acknowledgment indication, or an indication that the feedback information is not present. (for example, DTX). In some examples, a set of broadband SC-FDM sequences includes different broadband SC-FDM sequences, each associated with a different combination of SRS, SR, and the feedback information. In some cases, a set of narrowband SC-FDM sequences may include different narrowband SC-FDM sequences, each associated with a different combination of SR and feedback information.

[0059] Waveform selection component 1235 selects a transmit waveform for the uplink common burst symbol based on the information to be transmitted in the uplink common burst symbol and selects a SC-FDM or OFDM waveform based on the information to be transmitted. In some cases, selecting the transmit waveform includes selecting the SC-FDM waveform when the information to be transmitted in the uplink common burst symbol includes SRS information, SR information, feedback information. associated with a downlink transmission or combinations thereof. In some cases, selecting the transmit waveform additionally or alternatively includes selecting the SC-FDM waveform for a first subset of a set of uplink common burst symbol frequency resources and selecting the OFDM waveform for a second subset of the frequency resource set of the uplink common burst symbol when the information to be transmitted includes both uplink data and one or more of SRS information, SR information, or link information. feedback. In some cases, the frequency resource set includes a set of frequency tones associated with a set of subcarriers used to transmit the uplink common burst symbol, and the first subset of the frequency resource set and the second subset of the frequency resource set. frequency resource set includes alternating tones of the frequency tone set. In some cases, selecting the transmit waveform additionally or alternatively includes selecting an SC-FDM waveform sequence from a set of available SC-FDM sequences based on the information to be transmitted on the uplink common burst symbol. In some cases, selecting the transmit waveform additionally or alternatively includes selecting a low peak-to-average ratio (PAPR) sequence of SC-FDM from a set of available SC-FDM sequences based on the information that is displayed. is going to transmit on the uplink common burst symbol.

[0060] The FFT component 1240 may identify a sub-matrix of FFT samples corresponding to the final part of the symbol duration. The vector identification component 1245 may identify a set of vectors associated with the FFT sub-array of samples and identify a different set of vectors associated with the FFT sub-array of samples.

The feedback component 1250 may format the feedback associated with the downlink transmission in the vector set, determine, during the initial part, the feedback associated with the downlink transmission, and formatting the feedback includes removing a prefix. cyclical associated with feedback.

[0062] Transmitter 1220 can transmit signals generated by other components of the device. In some examples, the transmitter 1220 may be co-located together with a receiver 1210 on a transceiver module. For example, transmitter 1220 may be an example of aspects of transceiver 1435 described with reference to FIG. 14. Transmitter 1220 may include a single antenna, or it may include a set of antennas.

[0063] FIG. 13 shows a block diagram 1300 of a UE communication manager 1315 that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. The UE 1315 communication manager may be an example of aspects of a UE communication manager 1115, UE communication manager 1215, or UE communication manager 1415 described with reference to FIGS. 11, 12 and 14. The UE 1315 communication manager may include a common burst component from UL 1320, an information component from UL 1325, a waveform selection component 1330, an FFT component 1335, a component vector identification component 1340, a feedback component 1345, a sequence component of SC-FDM 1350, a waveform component of OFDM 1355, a component of DMRS 1360 and a payload component 1365. Each of these modules it can communicate, directly or indirectly, with each other (for example, by means of one or more buses).

The common burst component of UL 1320 can identify an uplink common burst symbol in a wireless communication subframe and identify an uplink common burst symbol in a wireless communication subframe for transmission of feedback associated with a downlink transmission in the wireless communication subframe, the uplink common burst symbol having a symbol duration with a leading part and a trailing part.

[0065] The information component of UL 1325 can determine information to be transmitted in the uplink common burst symbol. In some cases, a set of broadband SC-FDM sequences includes different broadband SC-FDM sequences, each associated with a different combination of SRS, SR, and feedback information, indicating whether an SR is present. , and feedback information. In some cases, the broadband SC-FDM sequence set includes different broadband SC-FDM sequences, each associated with a different combination of SRS, SR, and feedback information, and a set of SC sequences. Narrowband-FDM includes different narrowband SC-FDM sequences, each associated with a different combination of SR and feedback information.

[0066] Waveform selection component 1330 selects a transmit waveform for the uplink common burst symbol based on the information to be transmitted in the uplink common burst symbol. In some cases, selecting the transmit waveform additionally or alternatively includes selecting the SC-FDM waveform when the information to be transmitted in the uplink common burst symbol includes SRS information, SR, feedback information associated with a downlink transmission, or combinations thereof. In some cases, selecting the transmit waveform additionally or alternatively includes selecting the SC-FDM waveform for a first subset of a set of uplink common burst symbol frequency resources and selecting the OFDM waveform for a second subset of the frequency resource set of the uplink common burst symbol when the information to be transmitted includes both uplink data and one or more of SRS information, SR information, or link information. feedback. In some cases, the frequency resource set includes a set of frequency tones associated with a set of subcarriers used to transmit the uplink common burst symbol, and where the first subset of the frequency resource set and the second subset of the set of frequency resources include alternating tones of the set of frequency tones.

The FFT component 1335 may identify a sub-matrix of FFT samples corresponding to the final part of the symbol duration. The vector identification component 1340 may identify a set of vectors associated with the FFT sub-array of samples and identify a different set of vectors associated with the FFT sub-array of samples.

The feedback component 1345 can format the feedback associated with the downlink transmission in the vector set, determine, during the initial part, the feedback associated with the downlink transmission, and formatting the feedback includes removing a prefix cyclical associated with feedback.

The SC-FDM 1350 sequence component can identify a set of broadband SC-FDM sequences, select the SC-FDM sequence from the set of broadband SC-FDM sequences based on which of the SRS information, SR information, feedback information or combinations thereof are to be transmitted on the uplink common burst symbol. The SC-FDM 1350 sequence component can, in some cases, identify a set of broadband SC-FDM sequences and a set of narrowband SC-FDM sequences, select the SC-FDM sequence from the set of wideband SC-FDM sequences when SRS information is to be transmitted on the uplink common burst symbol, and select the SC-FDM sequence from the set of narrowband SC-FDM sequences when not to transmit SRS information on the uplink common burst symbol. In some cases, the set of narrowband SC-FDM sequences includes the same sequence transmitted on different narrowband resources, with each of the different narrowband resources being associated with a different combination of SRs and feedback information. In some cases, cyclic offsets are selected to provide a subset of frequency tones that have the same value regardless of the cyclic offsets from a sequence. basic. In some cases, each of the SC-FDM sequence set has a sequence length of N and the information to be transmitted in the uplink common burst symbol includes feedback information that has M possible states, and where the SC-FDM sequences are selected to provide evenly spaced sequences for M cyclic shifts associated with the M possible states of the feedback information. In some cases, the number N is not a multiple of M. In some cases, the number N is a multiple of M. In some cases, each of the cyclic offsets is associated with a combination of SRS, SR, and feedback information. In some cases, the set of available SC-FDM sequences is selected to provide detection based on cyclic shifts from a basic sequence.

The OFDM waveform component 1355 can select the OFDM waveform for at least a portion of the uplink common burst symbol for an uplink data transmission, and transmit one or more than one SR or feedback information in the uplink data. In some cases, the OFDM waveform is used for a part of the uplink resources, and the SC-FDM waveform is used for other parts of the uplink resources.

[0071] The DMRS component 1360 can transmit a DMRS in the transmit waveform. In some cases, the uplink data includes feedback information that is modulated in the DMRS.

The payload component 1365 may format a payload associated with the uplink common burst symbol in the different vector set. In some cases, the payload includes one or more of the feedback associated with the downlink transmission, an SR, or a feedback.

[0073] FIG. 14 shows a diagram of a system 1400 that includes a device 1405 that supports an uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. Device 1405 may be an example of, or include the components of, device 1105, device 1205, or a UE 115 as described above, for example with reference to FIGS. 1, 11, and 12. Device 1405 may include components for two-way voice and data communications that include components for transmitting and receiving communications, including a UE 1415 communications manager, processor 1420, memory 1425, software 1430, a transceiver 1435, antenna 1440, and I / O controller 1445. These components may be in electronic communication via one or more buses (eg, bus 1410). Device 1405 can communicate wirelessly with one or more base stations 105.

[0074] Processor 1420 may include an intelligent hardware device (eg, a general-purpose processor, a digital signal processor (DSP), a central processing unit (CPU), a microcontroller, a processor-specific integrated circuit). (ASIC), programmable gate array (FPGA), a programmable logic, a logic component or discrete transistor gates, discrete hardware component or any combination thereof). In some cases, processor 1420 may be configured to operate a memory array using a memory controller. In other cases, a memory controller may be integrated into processor 1420. Processor 1420 may be configured to execute computer-readable instructions stored in memory to perform various functions (for example, functions or tasks that support the configuration of the symbol of uplink common burst).

Memory 1425 may include random access memory (RAM) and read-only memory (ROM). Memory 1425 can store computer-readable and computer-executable software 1430 that includes instructions that, when executed, cause the processor to perform various functions described herein. In some cases, memory 1425 may contain, among other things, a basic input / output system (BIOS) that can control basic hardware and / or software operation, such as interaction with components or peripheral devices.

[0076] Software 1430 may include code to implement aspects of the present disclosure, including code to support uplink common burst symbol configuration. The software 1430 may be stored on a non-transient, computer-readable medium, such as system memory or other memory. In some cases, the 1430 software may not be directly executable by the processor, but may instead cause (for example, once compiled and run) a computer to perform the functions described herein.

[0077] Transceiver 1435 may communicate bi-directionally, via one or more antennas and wired or wireless links, as described above. For example, transceiver 1435 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. Transceiver 1435 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate the packets received from the antennas.

In some cases, the wireless device may include a single antenna 1440. However, in some cases the device may have more than one antenna 1440, which can simultaneously transmit or receive multiple wireless transmissions.

[0079] I / O controller 1445 can manage input and output signals for device 1405. I / O controller 1445 can also manage peripherals not integrated in device 1405. In some cases, I / O controller S 1445 can represent a connection or a physical port to an external peripheral. In some cases, the 1445 I / O Controller may use an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNlX®, In UX®, or another operating system. known.

[0080] FIG. 15 shows a block diagram 1500 of a device 1505 that supports uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. Device 1505 may be an example of aspects of a base station 105 as described with reference to FIG. 1. Device 1505 may include a receiver 1510, a base station communications manager 1515, and a transmitter 1520. Device 1505 may also include a processor. Each of these components can be in communication with each other (for example, by means of one or more buses).

The receiver 1510 may receive information such as packets, user data, or control information associated with various information channels (eg, control channels, data channels, and information related to the configuration of the link common burst symbol). ascending, etc.). Information can be passed to other components of the device. Receiver 1510 may be an example of aspects of transceiver 1835 described with reference to FIG. 18.

The base station communication manager 1515 may be an example of aspects of the base station communication manager 1815 described with reference to FIG. 18. Base station communications manager 1515 allocates uplink common burst symbol resources to a UE for transmission of an uplink common burst symbol, identifies a set of transmission waveforms available for the symbol uplink common burst symbol, each transmit waveform of the set of transmit waveforms being associated with different information to be transmitted in the uplink common burst symbol, receives the uplink common burst symbol from the UE, determines the transmission waveform of the uplink common burst symbol and determines the information included in the uplink common burst symbol based on the determined transmission waveform of the link common burst symbol upward.

[0083] Transmitter 1520 can transmit signals generated by other components of the device. In some examples, the transmitter 1520 may be co-located together with a receiver 1510 on a transceiver module. For example, transmitter 1520 may be an example of aspects of transceiver 1835 described with reference to FIG. 18. Transmitter 1520 may include a single antenna, or it may include a set of antennas.

[0084] FIG. 16 shows a block diagram 1600 of a device 1605 that supports uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. Device 1605 may be an example of aspects of a device 1505 or a base station 105 as described with reference to FIGS. 1 and 15. Device 1605 may include a receiver 1610, a base station communications manager 1615, and a transmitter 1620. Device 1605 may also include a processor. Each of these components can be in communication with each other (for example, by means of one or more buses).

The receiver 1610 may receive information such as packets, user data, or control information associated with various information channels (eg, control channels, data channels, and information related to the configuration of the link common burst symbol). ascending, etc.). Information can be passed to other components of the device. Receiver 1610 may be an example of aspects of transceiver 1835 described with reference to FIG. 18.

The base station communication manager 1615 may be an example of aspects of the base station communication manager 1815 described with reference to FIG. 18.

The base station communications manager 1615 may also include a resource allocation component 1625, a waveform identification component 1630, a common burst receiver 1635, a waveform determination component 1640, and a information determination component 1645.

[0088] Resource allocation component 1625 allocates uplink common burst symbol resources to a UE for transmission of an uplink common burst symbol.

[0089] Waveform identification component 1630 identifies a set of transmit waveforms available for the uplink common burst symbol, each transmit waveform of the set of transmit waveforms being associated with information different that is going to transmit on the uplink common burst symbol. In some cases, the waveform identification component 1630 may configure the UE to select the SC-FDM waveform for a first subset of a set of uplink common burst symbol frequency resources and the form of OFDm waveform for a second subset of the frequency resource set of the uplink common burst symbol when the information to be transmitted includes both uplink data and one or more of SRS information, SR information, or feedback. In some cases, the frequency resource set includes a set of frequency tones associated with a set of subcarriers used to transmit the uplink common burst symbol, and where the first subset of the frequency resource set and the second subset of the set of frequency resources include alternating tones of the set of frequency tones. In some cases, the determination of the information included is based on a mapping between the set of transmit waveforms and the different information to be transmitted in the uplink common burst symbol.

The common burst receiver 1635 may receive the uplink common burst symbol from the UE. The waveform determining component 1640 can determine the transmit waveform of the uplink common burst symbol and, in some cases, coherently combine, based on the channel estimate, two or more frequency domain samples of the set of frequency tones, and coherently combining, based on the channel estimate, a time-domain sample energy after IDFT.

The information determining component 1645 determines the information included in the uplink common burst symbol based on the determined transmission waveform of the uplink common burst symbol, and determines that the information includes the data uplink based on the determination that the transmit waveform is an OFDM waveform. In some cases, the information transmitted in the uplink common burst symbol additionally or alternatively includes SRS information, and when determining the information included in the uplink common burst symbol additionally or alternatively includes determining that the information includes SRS information based on the determination that the transmit waveform is an SC-FDM waveform for a first part of the uplink common burst symbol.

[0092] Transmitter 1620 can transmit signals generated by other components of the device. In some examples, the transmitter 1620 may be co-located together with a receiver 1610 on a transceiver module. For example, transmitter 1620 may be an example of aspects of transceiver 1835 described with reference to FIG. 18. Transmitter 1620 may include a single antenna, or it may include a set of antennas.

[0093] FIG. 17 shows a block diagram 1700 of a base station communication manager 1715 that supports uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. Base station communications manager 1715 may be an example of aspects of a base station communications manager 1815 described with reference to FIGS. 15, 16 and 18. Base station communications manager 1715 may include a resource allocation component 1720, a waveform identification component 1725, a common burst receiver 1730, a waveform determination component 1735 , an information determination component 1740, an SC-FDM sequence component 1745, an OFDM waveform component 1750, a signal detection component 1755, a waveform correlation component 1760, a cyclic offset 1765, a channel estimation component 1770, and a DMRS component 1775. Each of these modules can communicate, directly or indirectly, with each other (eg, via one or more buses).

The resource allocation component 1720 may allocate uplink common burst symbol resources to a UE for transmission of an uplink common burst symbol.

[0095] Waveform identification component 1725 identifies a set of transmit waveforms available for the uplink common burst symbol, each transmit waveform of the set of transmit waveforms being associated with information different to be transmitted on the uplink common burst symbol. In some cases, the waveform identification component 1725 may configure the UE to select the SC-FDM waveform for a first subset of a set of uplink common burst symbol frequency resources and the shape of OFDM waveform for a second subset of the frequency resource set of the uplink common burst symbol when the information to be transmitted includes both uplink data and one or more of SRS information, SR information, or link information. feedback. In some cases, the frequency resource set includes a set of frequency tones associated with a set of subcarriers used to transmit the uplink common burst symbol, and where the first subset of the frequency resource set and the second subset of the set of frequency resources include alternating tones of the set of frequency tones. In some cases, the determination of the information included is based on a mapping between the set of transmit waveforms and the different information to be transmitted in the uplink common burst symbol.

The common burst receiver 1730 receives the uplink common burst symbol from the UE. The waveform determining component 1735 can determine the transmission waveform of the uplink common burst symbol, coherently combining, based on the channel estimate, two or more frequency domain samples of the set of tones from frequency, and coherently combining, based on the channel estimate, an energy of the time-domain samples after the IDFT.

[0097] The information determining component 1740 determines the information included in the uplink common burst symbol based on the determined transmission waveform of the uplink common burst symbol and determines that the information includes the uplink data. uplink based on the determination that the transmit waveform is an OFDM waveform for a second part of the uplink common burst symbol. In some cases, the information transmitted in the uplink common burst symbol additionally or alternatively includes SRS information, and when determining the information included in the uplink common burst symbol additionally or alternatively includes determining that the information includes SRS information based on the determination that the transmit waveform is an SC-FDM waveform for a first part of the uplink common burst symbol.

The sequence component of SC-FDM 1745 can configure the UE to select the waveform of SC-FDM when the information to be transmitted in the uplink common burst symbol includes SRS information, information of SR, feedback information associated with a downlink transmission, or combinations thereof. In some cases, the set of transmit waveforms includes a subset of SC-FDM waveforms that have different sequences, and where the transmit waveform of the uplink common burst symbol is selected from the subset of forms. SC-FDM waveform based on the information to be transmitted on the uplink common burst symbol. In some cases, the SC-FDM waveform subset includes a set of broadband SC-FDM sequences that are selected based on which of the SRS information, SR information, feedback information, or combinations of the they are transmitted on the uplink common burst symbol. In some cases, the SR information includes an indication of whether an SR is present, and the feedback information includes an acknowledgment indication, a negative acknowledgment indication, or an indication that the feedback information is not present. . In some cases, the SC-FDM waveform subset includes a first set of wideband SC-FDM sequences and a second set of narrowband SC-FDM sequences, and where the transmission waveform of the uplink common burst symbol is selected from the first set of wideband SC-FDM sequences when the SRS information is transmitted on the uplink common burst symbol, and the common burst symbol transmit waveform Uplink is selected from the second set of narrowband SC-FDM sequences when no SRS information is transmitted in the uplink common burst symbol.

The OFDM waveform component 1750 can configure the UE to select the OFDM waveform when the information to be transmitted in the uplink common burst symbol includes uplink data and identifies an SR or feedback information in the uplink data. In some cases, the information to be transmitted in the uplink common burst symbol includes uplink data, and where the transmit waveform is selected to be the OFDM waveform for at least a part uplink common burst symbol.

[0100] Signal detection component 1755 may determine a signal associated with each of a set of frequency tones from the received uplink common burst symbol. In some cases, the signal may be a signal from an IDFT component jack.

[0101] Waveform correlation component 1760 can correlate the signal associated with each of the set of frequency tones to the set of transmit waveforms and identify the transmit waveform of the link common burst symbol. ascending based on correlation. In some cases, the correlation includes applying an inverse discrete Fourier transform (IDFT) to the frequency tone set of the received uplink common burst symbol to generate a time domain sequence. In some cases, the correlation includes additionally or alternatively selecting the transmission waveform associated with a cyclic shift from the set of cyclic shifts that have a higher correlation value.

[0102] Cyclic shift component 1765 performs a set of cyclic shifts in the time domain sequence, each of the set of cyclic shifts corresponding to a different transmit waveform from the set of transmit waveforms. In some cases, the set of cyclic offsets is selected to provide a subset of frequency tones that have the same value regardless of cyclic offsets from a basic sequence. In some cases, the information to be transmitted in the uplink common burst symbol includes feedback information having M possible states, and where the SC-FDM sequences are selected to provide M equidistantly spaced sequences for M cyclic offsets associated with M possible states of the feedback information, and where a length of the SC-FDM sequences may or may not be a multiple of M.

[0103] Channel estimate component 1770 can filter the set of cyclic offsets based on a channel estimate associated with a previous UE transmission, perform a channel estimate for the UE based on the set of symbol frequency tones received uplink busbar, or based on a subset of frequency tones from the received uplink busstroke symbol. In some cases, the channel estimation component 1770 may add two or more time domain samples associated with the subset of frequency tones, and a channel estimate for the UE is based on the added time domain samples. In some cases, the channel estimate component 1770 may weight one or more time-domain samples associated with the set of cyclic offsets, and the channel estimate for the UE is based on the weighted time-domain samples. In some cases, the channel estimate for the UE is based on the transmit waveform of the uplink common burst symbol.

[0104] The 1775 DMRS component can receive a DMRS on the transmit waveform and can receive feedback information that is modulated on the DMRS.

[0105] FIG. 18 shows a diagram of a system 1800 that includes a device 1805 that supports uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. Device 1805 may be an example of, or include the components of, base station 105 as described above, for example, with reference to FIG. 1. Device 1805 may include components for two-way voice and data communications including components for transmitting and receiving communications, including base station communications manager 1815, processor 1820, memory 1825, software 1830, transceiver 1835, an antenna 1840, a network communications manager 1845, and a base station communications manager 1850. These components may be in electronic communication via one or more buses (eg, bus 1810). Device 1805 can communicate wirelessly with one or more UE 115.

[0106] The base station communications manager 1815 may manage communications with another base station 105, and may include a controller or scheduler to control communications with the UEs 115 in cooperation with other base stations 105. For example, the station manager Base station communications 1815 may coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques, such as beamforming or co-transmission. In some examples, the base station communication manager 1815 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communication between base stations 105.

[0107] The 1820 processor may include an intelligent hardware device (eg, a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a gate logic component or discrete transistors, a discrete hardware component, or any combination thereof). In some cases, the processor 1820 may be configured to operate a memory array using a memory controller. In other cases, a memory controller may be integrated into the processor 1820. The processor 1820 may be configured to execute computer-readable instructions stored in memory to perform various functions (for example, functions or tasks that support the configuration of the symbol of uplink common burst).

[0108] Memory 1825 may include RAM and ROM. Memory 1825 can store computer-readable and computer-executable software 1830 that includes instructions that, when executed, cause the processor to perform various functions described herein. In some cases, memory 1825 may contain, among other things, a BIOS that can control basic hardware and / or software operation such as interaction with components or peripheral devices.

[0109] The 1830 software may include code to implement aspects of the present disclosure, including code to support uplink common burst symbol configuration. The 1830 software may be stored on a non-transient, computer-readable medium, such as system memory or other memory. In some cases, the 1830 software may not be directly executable by the processor, but may instead cause (for example, once compiled and run) a computer to perform the functions described herein.

[0110] The 1835 transceiver can communicate bi-directionally, via one or more antennas and wired or wireless links, as described above. For example, the 1835 transceiver may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. Transceiver 1835 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate the packets received from the antennas.

[0111] In some cases, the wireless device may include a single 1840 antenna. However, in In some cases, the device may have more than one 1840 antenna, which can simultaneously transmit or receive multiple wireless transmissions.

[0112] The network communications manager 1845 may manage communications with the core network (eg, via one or more wired return links). For example, the network communications manager 1845 can manage the transfer of data communications for client devices, such as one or more UE 115.

[0113] The base station communications manager 1850 may manage communications with another base station 105, and may include a controller or scheduler to control communications with the UEs 115 in cooperation with other base stations 105. For example, the manager of Base station communications 1850 can coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques, such as beamforming or co-transmission. In some examples, the base station communication manager 1850 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communication between base stations 105.

[0114] FIG. 19 shows a flow chart illustrating a procedure 1900 for uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. A UE 115 or its components may implement the operations of procedure 1900 as described herein. For example, a UE communications manager may perform the operations of procedure 1900 as described with reference to FIGS. 11-14. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may perform aspects of the functions described below using special purpose hardware.

[0115] In 1905, the UE 115 identifies an uplink common burst symbol in a wireless communication subframe. The operations of block 1905 can be performed according to the procedures described with reference to FIGS. 1 to 10. In some examples, a common UL burst component may perform the operations aspects of block 1905 as described with reference to FIGS. 11 to 14.

[0116] In 1910, the UE 115 determines the information to be transmitted in the uplink common burst symbol. The operations of block 1910 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, a UL information component may perform the operations aspects of block 1910 as described with reference to FIGS. 11 to 14.

[0117] In 1915, the UE 115 selects a transmit waveform for the uplink common burst symbol based at least in part on the information to be transmitted in the uplink common burst symbol. The operations of block 1915 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, a waveform selection component may perform the operations aspects of block 1915 as described with reference to FIGS. 11 to 14.

[0118] FIG. 20 shows a flow chart illustrating a procedure 2000 for uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. A UE 115 or its components may implement the operations of procedure 2000 as described herein. For example, a UE communications manager may perform the operations of procedure 2000 as described with reference to FIGS. 11-14. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may perform aspects of the functions described below using special purpose hardware.

[0119] In 2005, the UE 115 identifies an uplink common burst symbol in a wireless communication subframe. The operations of block 2005 can be performed according to the procedures described with reference to FIGS. 1 to 10. In some examples, a common UL burst component may perform the operations aspects of block 2005 as described with reference to FIGS. 11 to 14.

[0120] In 2010, the UE 115 determines the information to be transmitted in the uplink common burst symbol. Block 2010 operations can be performed according to the procedures described with reference to FIGS. 1 to 10. In some examples, a UL information component may perform the operations aspects of block 2010 as described with reference to FIGS. 11 to 14.

[0121] In 2015, the UE 115 can identify a set of wideband SC-FDM sequences. Block 2015 operations can be performed according to the procedures described with reference to FIGS. 1 to 10. In some examples, an SC-FDM sequence component may perform the operations aspects of block 2015 as described with reference to FIGS. 11 to 14.

[0122] In 2020, the UE 115 may select the SC-FDM sequence from the set of broadband SC-FDM sequences based at least in part on which of the SRS information, SR information, feedback information or combinations thereof are to be transmitted on the uplink common burst symbol. Block 2020 operations can be performed according to the procedures described with reference to FIGS. 1 to 10. In some examples, an SC-FDM sequence component may perform the operations aspects of block 2020 as described with reference to FIGS. 11 to 14.

[0123] In some cases, selecting the SC-FDM sequence comprises determining that the information to be transmitted in the uplink common burst symbol comprises one or more of SRS information, SR information, or associated feedback information. with a downlink transmission.

[0124] In some cases, selecting the transmit waveform additionally or alternatively comprises selecting a SC-FDM waveform sequence from a set of available SC-FDM sequences based at least in part on the information. to be transmitted on the uplink common burst symbol. In some cases, selecting the transmit waveform additionally or alternatively includes selecting a low SC-FDM PAPR sequence from a set of available SC-FDM sequences based on the information to be transmitted in the symbol. uplink common burst.

[0125] FIG. 21 shows a flow chart illustrating a procedure 2100 for uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. A UE 115 or its components may implement the operations of procedure 2100 as described herein. For example, a UE communications manager may perform the operations of procedure 2100 as described with reference to FIGS. 11-14. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may perform aspects of the functions described below using special purpose hardware.

[0126] In 2105, the UE 115 identifies an uplink common burst symbol in a wireless communication subframe. The operations of block 2105 can be performed according to the procedures described with reference to FIGS. 1 to 10. In some examples, a common UL burst component may perform the operations aspects of block 2105 as described with reference to FIGS. 11 to 14.

[0127] At 2110, the UE 115 determines the information to be transmitted in the uplink common burst symbol. The operations of block 2110 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, a UL information component may perform the operations aspects of block 2110 as described with reference to FIGS. 11 to 14.

[0128] At 2115, the UE 115 can identify a set of wideband SC-FDM sequences and a set of narrowband SC-FDM sequences. The operations of block 2115 can be performed according to the procedures described with reference to FIGS. 1 to 10. In some examples, an SC-FDM sequence component may perform the operations aspects of block 2115 as described with reference to FIGS. 11 to 14.

[0129] At 2120, the UE 115 may select the SC-FDM sequence from the set of wideband SC-FDM sequences when SRS information is to be transmitted in the uplink common burst symbol. The operations of block 2120 can be performed in accordance with the procedures described with reference to FIGS. 1 to 10. In some examples, an SC-FDM sequence component may perform the operations aspects of block 2120 as described with reference to FIGS. 11 to 14.

[0130] At 2125, the UE 115 may select the SC-FDM sequence from the set of narrowband SC-FDM sequences when no SRS information is to be transmitted in the uplink common burst symbol. The operations of block 2125 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, an SC-FDM sequence component may perform the operations aspects of block 2125 as described with reference to FIGS. 11 to 14.

[0131] In some cases, selecting the SC-FDM sequence comprises determining that the information to be transmitted in the uplink common burst symbol comprises one or more of SRS information, SR information, or associated feedback information. with a downlink transmission.

[0132] Selecting the transmit waveform comprises selecting a SC-FDM waveform sequence from a set of available SC-FDM sequences based at least in part on the information to be transmitted in the symbol of uplink common burst. In some cases, selecting the transmit waveform additionally or alternatively includes selecting a low SC-FDM PAPR sequence from a set of available SC-FDM sequences based on the information to be transmitted in the symbol. uplink common burst.

[0133] FIG. 22 shows a flow chart illustrating a procedure 2200 for uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. A UE 115 or its components may implement the operations of procedure 2200 as described herein. For example, a UE communications manager may perform the operations of procedure 2200 as described with reference to FIGS. 11-14. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may perform aspects of the functions described below using special purpose hardware.

[0134] At 2205, the UE 115 identifies an uplink common burst symbol in a wireless communication subframe. The operations of block 2205 can be performed according to the procedures described with reference to FIGS. 1 to 10. In some examples, a common UL burst component may perform the operations aspects of block 2205 as described with reference to FIGS. 11 to 14.

[0135] At 2210, the UE 115 determines that the information to be transmitted in the uplink common burst symbol includes SRS information and uplink data. The operations of block 2210 can be performed in accordance with the procedures described with reference to FIGS. 1 to 10. In some examples, a UL information component may perform the operations aspects of block 2210 as described with reference to FIGS. 11 to 14.

[0136] At 2215, the UE 115 selects an SC-FDM waveform for a first part of the uplink common burst symbol for transmission of SRS information. The operations of block 2215 can be performed in accordance with the procedures described with reference to FIGS. 1 to 10. In some examples, a waveform selection component may perform the operations aspects of block 2215 as described with reference to FIGS. 11 to 14.

[0137] At 2220, the UE 115 may select an OFDM waveform for a second part of the uplink common burst symbol for data transmission. The operations of block 2220 can be performed in accordance with the procedures described with reference to FIGS. 1 to 10. In some examples, an OFDM waveform component may perform the operations aspects of block 2220 as described with reference to FIGS. 11 to 14.

[0138] In some cases, the information to be transmitted in the uplink common burst symbol additionally or alternatively comprises SRS information, and in which selecting the transmission waveform additionally or alternatively comprises selecting an SC-FDM waveform for a first part of the uplink common burst symbol for transmission. SRS information.

[0139] In some cases, the information to be transmitted in the uplink common burst symbol comprises uplink data, and in which selecting the transmitting waveform comprises: selecting an OFDM waveform to at least a part of the uplink common burst symbol.

[0140] FIG. 23 shows a flow chart illustrating a procedure 2300 for uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. A base station 105 or its components may implement the operations of method 2300 as described herein. For example, a base station communication manager may perform the operations of method 2300 as described with reference to FIGS. 15-18. In some examples, a base station 105 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, base station 105 may perform aspects of the functions described below using special purpose hardware.

[0141] At 2305, base station 105 may allocate uplink common burst symbol resources to a UE for transmission of an uplink common burst symbol. The operations of block 2305 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, a resource allocation component may perform the operations aspects of block 2305 as described with reference to FIGS. 15 to 18.

[0142] At 2310, base station 105 identifies a set of available transmit waveforms for the uplink common burst symbol, each transmit waveform of the set of transmit waveforms being associated with different information that to be transmitted on the uplink common burst symbol. The operations of block 2310 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, a waveform identification component may perform the operations aspects of block 2310 as described with reference to FIGS. 15 to 18.

[0143] At 2315, the base station 105 receives the uplink common burst symbol from the UE. The operations of block 2315 can be performed in accordance with the procedures described with reference to FIGS. 1 to 10. In some examples, a common burst receiver may perform the operations aspects of block 2315 as described with reference to FIGS. 15 to 18.

[0144] At 2320, base station 105 determines the transmit waveform of the uplink common burst symbol. The operations of block 2320 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, a waveform determining component may perform the operations aspects of block 2320 as described with reference to FIGS.

15 to 18.

[0145] At 2325, base station 105 determines the information included in the uplink common burst symbol based at least in part on the determined transmission waveform of the uplink common burst symbol. The operations of block 2325 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, an information determining component may perform the operations aspects of block 2325 as described with reference to FIGS. 15 to 18.

[0146] FIG. 24 shows a flow chart illustrating a procedure 2400 for uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. A base station 105 or its components may implement the operations of method 2400 as described herein. For example, a base station communication manager may perform the operations of method 2400 as described with reference to FIGS. 15-18. In some examples, a base station 105 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, base station 105 may perform aspects of the functions described below using special purpose hardware.

[0147] At 2405, base station 105 allocates uplink common burst symbol resources to a UE for transmission of an uplink common burst symbol. The operations of block 2405 can be performed in accordance with the procedures described with reference to FIGS. 1-10. In some examples, a resource allocation component may perform the operations aspects of block 2405 as described with reference to FIGS. 15 to 18.

[0148] At 2410, base station 105 identifies a set of available transmit waveforms for the uplink common burst symbol, each transmit waveform of the set of transmit waveforms being associated with different information that to be transmitted on the uplink common burst symbol. The operations of block 2410 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, a waveform identification component may perform the operations aspects of block 2410 as described with reference to FIGS. 15 to 18.

[0149] At 2415, base station 105 receives the uplink common burst symbol from the UE. The operations of block 2415 can be performed in accordance with the procedures described with reference to FIGS. 1 to 10. In some examples, a common burst receiver may perform the operations aspects of block 2415 as described with reference to FIGS. 15 to 18.

[0150] At 2420, base station 105 may correlate the signal associated with each of the plurality of frequency tones to the set of transmit waveforms. The operations of block 2420 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, a waveform correlation component may perform the operations aspects of block 2420 as described with reference to FIGS. 15 to 18.

[0151] At 2425, base station 105 may identify the transmit waveform of the uplink common burst symbol based at least in part on the correlation. The operations of block 2425 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, a waveform correlation component may perform the operations aspects of block 2425 as described with reference to FIGS. 15 to 18.

[0152] At 2430, base station 105 determines the information included in the uplink common burst symbol based at least in part on the determined transmission waveform of the uplink common burst symbol. The operations of block 2430 can be performed in accordance with the procedures described with reference to FIGS. 1 through 10. In some examples, an information determining component may perform the operations aspects of block 2430 as described with reference to FIGS. 15 to 18.

[0153] In some cases, the set of transmitting waveforms comprises one or more than one form of SC-FDM waveform or an OFDM waveform.

[0154] In some cases, determining the transmission waveform of the uplink common burst symbol comprises determining a signal associated with each of a plurality of frequency tones of the received uplink common burst symbol.

[0155] The transmission waveform set comprises a subset of SC-FDM waveforms having different sequences, and wherein the transmission waveform of the uplink common burst symbol is selected from the subset of SC-FDM waveforms based at least in part on the information to be transmitted in the uplink common burst symbol.

[0156] In some cases, the information to be transmitted in the uplink common burst symbol comprises one or more of SRS information, SR information or feedback information associated with a downlink transmission, and in the that the subset of SC-FDM waveforms comprises a first plurality of wideband SC-FDM sequences and a second plurality of narrowband SC-FDM sequences, and wherein the symbol transmitting waveform The uplink common burst symbol is selected from the first plurality of wideband SC-FDM sequences when transmitting SRS information on the uplink common burst symbol, and the transmission waveform of the uplink common burst symbol. uplink is selected from the second plurality of narrowband SC-FDM sequences when no SRS information is transmitted in the uplink common burst symbol.

[0157] FIG. 25 shows a flow chart illustrating a procedure 2500 for uplink common burst symbol configuration in accordance with one or more aspects of the present disclosure. A UE 115 or its components may implement the operations of procedure 2500 as described herein. For example, a UE communications manager may perform the operations of procedure 2500 as described with reference to FIGS. 11-14. In some examples, a UE 115 may execute a set of codes to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the UE 115 may perform aspects of the functions described below using special purpose hardware.

[0158] At 2505, the UE 115 identifies an uplink common burst symbol in a wireless communication subframe for the feedback transmission associated with a downlink transmission in the wireless communication subframe, the common burst symbol having uplink a symbol duration with a leading part and a trailing part. The operations of block 2505 can be performed according to the procedures described with reference to FIGS. 1 to 10. In some examples, a common UL burst component may perform the operations aspects of block 2505 as described with reference to FIGS. 11 to 14.

[0159] At 2510, the UE 115 may identify a sub-matrix of FFT samples corresponding to the final part of the symbol duration. The operations of block 2510 can be performed in accordance with the procedures described with reference to FIGS. 1 to 10. In some examples, an FFT component may perform aspects of the operations of block 2510 as described with reference to FIGS. 11 to 14.

[0160] At 2515, the UE 115 can identify a set of vectors associated with the FFT sample sub-matrix. The operations of block 2515 can be performed in accordance with the procedures described with reference to FIGS. 1 to 10. In some examples, a vector identification component may perform aspects of the operations of block 2515 as described with reference to FIGS. 11 to 14.

[0161] At 2520, the UE 115 may format the feedback associated with the downlink transmission in the vector set. The operations of block 2520 can be performed in accordance with the procedures described with reference to FIGS. 1 to 10. In some examples, a feedback component may perform the operations aspects of block 2520 as described with reference to FIGS. 11 to 14.

[0162] It should be noted that the procedures described above describe possible implementations and that the operations can be rearranged or otherwise modified, and that other implementations are possible. In addition, aspects of two or more of the procedures can be combined.

[0163] The techniques described herein can be used in various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA, single carrier frequency division multiple access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. A CDMa system can implement radio technology, such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 technology encompasses IS-2000, IS-95, and IS-856 standards. The IS-2000 versions can be commonly referred to as CDMA2000 IX, IX, etc. The IS-856 (TIA-856) standard is commonly called CDMA2000 1xEV-DO, High Speed Packet Data (HRPD), etc. UTRA includes CDMA from broadband (WCDMA) and other CDMA variants. A TDMA system can implement radio technology such as global system for mobile communications (GSM).

[0164] An OFDMA system can implement a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX ), IEEE 802.20, Flash-OFDM, etc. The UTRA and E-UTRA technologies are part of the Universal Mobile Telecommunications System (UMTS). 3GPP LTE and LTE-A are new versions of UMTS that use E-UTRA. The technologies of UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents of the organization called "Third Generation Collaboration Project" (3GPP). CDMA2000 and UMB technologies are described in documents from a body called "Third Generation Collaborative Project 2" (3GPP2). The techniques described herein can be used for the aforementioned radio systems and technologies, as well as other radio systems and technologies. While aspects of an LTE system can be described for example purposes, and LTE terminology can be used throughout much of the description, the techniques described herein are applicable outside of LTE applications.

[0165] In LTE / LTE-A networks, including the networks described herein, the term eNB can be used, for example, to describe base stations. The wireless communication system (s) described herein may include a heterogeneous LTE / LTE-A network in which different types of eNBs provide coverage for various geographic regions. For example, each eNB or base station can provide communication coverage for a macro cell, small cell, or other cell types. The term "cell" can be used to describe a base station, a carrier or component carrier associated with a base station, or a coverage area (eg, sector, etc.) of a carrier or base station, depending on the context.

[0166] Base stations can include, or be referred to by those skilled in the art as, a base transceiver station, radio base station, access point, radio transceiver, Node B, eNB, gNB, home Node B, eNodeB domestic or with some other suitable terminology. The geographic coverage area for a base station can be divided into sectors that make up only a part of the coverage area. The wireless communication system (s) described herein may include base stations of different types (eg, macro cell or small cell base stations). The UEs described herein could communicate with various types of base stations and network equipment, including macro-eNBs, gNBs, small cell eNBs, relay base stations, and the like. There may be overlapping geographic coverage areas for different technologies.

[0167] A macrocell, for example, covers a relatively large geographical area (for example, several kilometers in radius) and can allow unrestricted access by UEs with service subscriptions at the network provider. A small cell is a lower power base station, compared to a macro cell, which can operate in the same or different frequency bands (eg licensed, unlicensed, etc.) than macro cells. Small cells can include picocells, femtocells, and microcells, according to various examples. A picocell, for example, can cover a small geographical area and can allow unrestricted access to UEs with subscriptions to the service at the network provider. A femto cell can also cover a small geographic area (for example, a home) and can provide restricted access by UEs that have an association with the femto cell (for example, UEs of a CSG, UEs for home users, and Similar). An eNB for a macrocell can be called a macro-eNB. An eNB for a small cell can be referred to as a small cell eNB, pico-eNB, femto-eNB, or domestic eNB. An eNB can support one or multiple (eg, two, three, four, and the like) cells (eg, component carriers). A gNB for a macrocell can be called a macro-gNB. A gNB for a small cell can be referred to as a small cell gNB, pico-gNB, femto-gNB, or house gNB. A gNB can support one or multiple (eg, two, three, four, and the like) cells (eg, component carriers). A UE could communicate with various types of base stations and network equipment, including macro-eNBs, small cell eNBs, relay base stations, and the like.

[0168] The wireless communication system (s) described herein may support synchronous or asynchronous operation. For synchronous operation, the base stations can have similar frame timing, and the transmissions from different base stations can be roughly aligned in time. For asynchronous operation, the base stations may have different frame timing, and the transmissions from different base stations may not be time aligned. The techniques described herein can be used for synchronous or asynchronous operations.

[0169] The downlink transmissions described herein can also be called forward link transmissions, while the uplink transmissions can also be called reverse link transmissions. Each communication link described herein, including, for example, the wireless communication system 100 and the wireless communication system 200 of FIGS. 1 and 2, can include one or more carriers, where each carrier can be a signal made up of multiple subcarriers (eg, waveform signals of different frequencies).

[0170] The description set forth herein, in connection with the accompanying drawings, describes examples of configurations and does not represent all examples that can be implemented or are within the scope of the claims. The term "exemplary" used herein means "exemplary, case or illustration", and not "preferred" or "advantageous over other examples". The detailed description includes specific details for the purpose of allowing an understanding of the techniques described. However, these techniques can be practiced without these specific details. In some cases, well-known structures and devices are shown in block diagram form to avoid obfuscating the concepts of the examples described.

[0171] The information and signals described herein can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols and chips that may have been mentioned throughout the above description can be represented by voltages, currents, electromagnetic waves, fields or magnetic particles, optical fields or particles, or any combination thereof.

[0172] The various illustrative blocks and modules described in connection with the disclosure herein may be implemented or realized with a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic, gate, or logic device. discrete transistors, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor can be a microprocessor, but alternatively, the processor can be any conventional processor, controller, microcontroller, or state machine. A processor can also be implemented as a combination of computing devices (eg, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0173] The functions described herein can be implemented in hardware, processor-run software, firmware, or any combination thereof. If implemented in software run by a processor, the functions can be stored on, or transmitted through, a computer-readable medium such as one or more instructions or code. Other examples and implementations are within the scope of the disclosure and the appended claims. For example, as a consequence of the nature of software, the functions described above can be implemented using processor-run software, hardware, firmware, cabling, or combinations of any of these. Features that implement functions can be physically located in various locations, including being distributed so that parts of the functions are implemented in different physical locations. As used herein, including in the claims, the term "and / or", when used in a list of two or more items, means that any one of the listed items can be used on its own, or that Any combination of two or more of the listed items can be used. For example, if a composition is described as containing components A, B, and / or C, the composition may contain only A; only B; only C; A and B in combination; A and C in combination; B and C in combination; or A, B and C in combination. Also, as used herein, including in the claims, "or" as used in a list of items (eg, a list of items preceded by a phrase such as "at least one of" or "one or more than ") indicates an inclusive list so, for example, a phrase that refers to" at least one of "a list of items refers to any combination of those items, including individual items. As an example, "at least one of: A, B, or C" is intended to cover A, B, C, AB, AC, BC, and ABC, as well as any combination with multiples of the same element (for example, AA, AAA, AAB, AAC, ABB, ACC, BB, BBB, BBC, CC and CCC or any other ordering of A, B and C). As used herein, the phrase "based on" shall not be construed as a reference to a closed set of conditions. For example, an exemplary step that is described as "based on condition A" can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as As used herein, the phrase "based on" shall be interpreted in the same way as the phrase "based at least in part on".

[0174] Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one location to another. A non-transient storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transient computer-readable media may comprise RAM, ROM, electrically erasable programmable read-only memory (EEPROM), compact disk ROM (CD), or other optical disk storage, storage on magnetic disk or other magnetic storage devices, or any other non-transient medium that can be used to transport or store desired program code media in the form of instructions or data structures and that can be accessed by a general-purpose computer or special purpose, or a general purpose or special purpose processor. Also, any connection is appropriately called a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of medium. Discs, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disc, and Blu-ray disc, where floppy discs normally reproduce data magnetically, while the other discs reproduce the data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0175] The description herein is provided to enable one skilled in the art to make or use the disclosure. Various modifications of the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other variants without departing from the scope of the disclosure. Therefore, the disclosure is not limited to the examples and designs described herein, but is defined solely by the scope of the appended claims.

Claims (15)

i. A method (1900) for wireless communication, comprising: identifying (1905) an uplink common burst symbol for transmission of one or more types of information in an autonomous wireless communication subframe; determining (1910) one or more types of information to be transmitted in the uplink common burst symbol; select (1915) one of a single carrier frequency division multiplexing transmission waveform, SC-FDM, an orthogonal frequency division multiplexing transmission waveform, OFDM, or a mixed transmission waveform of SC-FDM and OFDM for transmission of the uplink common burst symbol based at least in part on the one or more types of information to be transmitted in the uplink common burst symbol, wherein when selected the SC-FDM transmit waveform for uplink common burst symbol transmission, the transmission comprises selecting a sequence (505) from a set of sequences (505, 510, 515, 520) based at least in part to the information to be transmitted in the uplink common burst symbol, said sequence (505) identifying said information, and in which the different sequences of the set of sequences (505, 510, 515, 520) correspond nden at different cyclic shifts of a basic sequence; and transmit the uplink common burst symbol. The method of claim 1, wherein the set of sequences comprises different sequences transmitted in the same frequency band, each of the different sequences being associated with a different combination of a scheduling request, SR, or information feedback, or a sounding reference signal information, SRS, or any combination thereof. The method of claim 1, wherein the cyclic offsets are selected to provide a subset of frequency tones that have the same value regardless of the cyclic offsets from the basic sequence. 4. The method of claim 1, wherein the set of sequences each have a sequence length of N and the information to be transmitted in the uplink bus has M possible states, and in the that the sequences are selected to provide equally spaced sequences in frequency for M cyclic shifts associated with the M possible states of the information. The method of claim 4, wherein N is not a multiple of M. 6. The method of claim 4, wherein N is a multiple of M. The method of claim 1, wherein each of the cyclic offsets is associated with a combination of sounding reference signal, SRS, scheduling request, SR, and feedback information. The method of claim 1, wherein selecting the sequence from the set of sequences further comprises: select a single carrier frequency division multiplexing waveform sequence, SC-FDM, from a set of available SC-FDM sequences based at least in part on the information to be transmitted in the burst symbol uplink common; wherein the SC-FDM sequence selection comprises: determine that the information to be transmitted in the uplink common burst symbol comprises one or more of polling reference signal information, SRS, scheduling request information, SR, or feedback information associated with a transmission of downlink; identifying a set of broadband SC-FDM sequences and a set of narrowband SC-FDM sequences; select SC-FDM sequence from set of broadband SC-FDM sequences when SRS information is to be transmitted on the uplink common burst symbol; and select the SC-FDM sequence from the narrowband SC-FDM sequence set when no SRS information is to be transmitted in the uplink common burst symbol and where the band SC-FDM sequence set Narrow comprises different sequences transmitted in the same frequency band, each of the different sequences being associated with a different combination of SRs, and the feedback information. The method of claim 1, wherein the transmission waveform selection comprises: select the SC-FDM waveform when the information to be transmitted in the uplink common burst symbol comprises probing reference signal information, SRS, scheduling request information, SR, feedback information associated with a downlink transmission, or combinations thereof; and the method further comprising selecting the OFDM waveform when the information to be transmitted in the uplink common burst symbol comprises uplink data. The method of claim 9, wherein the transmission waveform selection further comprises: select the SC-FDM waveform for a first subset of a set of uplink common burst symbol frequency resources and select the OFDM waveform for a second subset of the burst symbol frequency resource set uplink common when the information to be transmitted comprises both uplink data and one or more of SRS information, SR information, or feedback information, wherein the set of frequency resources comprises a plurality of tones frequency associated with a plurality of subcarriers used to transmit the uplink common burst symbol, and wherein the first subset of the set of frequency resources and the second subset of the set of frequency resources comprise alternating tones of the plurality of frequency tones. The method of claim 1, wherein the information to be transmitted in the uplink common burst symbol comprises uplink data, and wherein selecting the transmission waveform comprises: selecting an Orthogonal Frequency Division Multiplexing, OFDM, waveform for at least a portion of the uplink common burst symbol. 12. A method (2300) for wireless communication, comprising: allocating (2305) uplink common burst symbol resources to a user equipment, UE, (115) for transmission of one or more types of information in an uplink common burst symbol in an autonomous wireless communication subframe; identifying (2310) a set of transmit waveforms available for transmission of the uplink common burst symbol, wherein the set of transmit waveforms comprises one of a carrier frequency division multiplexing waveform single, SC-FDM, an orthogonal frequency division multiplexing waveform, OFDM, or a mixed transmission waveform of SC-FDM and OFDM and each transmission waveform of the set of transmission waveforms is associated with one or more types of information to be transmitted in the uplink common burst symbol, and wherein when the SC-FDM transmit waveform is selected for uplink common burst symbol transmission , the transmission comprises selecting a sequence (505) from a set of sequences (505, 510, 515, 520) based at least in part on the information to be transmitted in the common burst symbol of en ascending link, said sequence (505) identifying said information, and in which the different sequences of the set of sequences (505, 510, 515, 520) correspond to different cyclic shifts of a basic sequence; receiving (2315) the uplink common burst symbol from the UE; determine (2320) the transmit waveform of the uplink common burst symbol and, when using the SC-FDM transmit waveform, a cyclic shift of one sequence in a SC-FDM waveform; and determine (2325) the information included in the uplink common burst symbol based at least in part on the determined transmit waveform and, when using the SC-FDM transmit waveform, the cyclic offset of the SC-FDM waveform sequence of the uplink common burst symbol. The method of claim 12, wherein the information to be transmitted in the uplink common burst symbol comprises one or more of polling reference signal information, SRS, scheduling request information, SR , or feedback information associated with a downlink transmission, and wherein the subset of SC-FDM waveforms comprises a first plurality of wideband SC-FDM sequences and a second plurality of SC-FDM sequences narrow band, and wherein the transmission waveform of the uplink common burst symbol is selected from the first plurality of wideband SC-FDM sequences when transmitting SRS information on the uplink common burst symbol, and the transmission waveform of the uplink bus symbol is selected from the second plurality of narrowband SC-FDM sequences when no SRS information is transmitted on the uplink bus symbol; and wherein determining the transmission waveform of the uplink common burst symbol comprises: determining a signal associated with each of a plurality of frequency tones of the received uplink common burst symbol; correlating the signal associated with each of the plurality of frequency tones with the set of transmitting waveforms, wherein the correlation comprises: applying an inverse discrete Fourier transform (IDFT) to the plurality of frequency tones of the received uplink common burst symbol to generate a time domain sequence; and performing a plurality of cyclic shifts in the time domain sequence, each of the plurality of cyclic shifts corresponding to a different transmission waveform from the set of transmission waveforms; and identifying the transmit waveform of the uplink common burst symbol based at least in part on the correlation. 14. An apparatus (1205) for wireless communication, comprising: means for identifying (1225) an uplink common burst symbol for transmission of one or more types of information in an autonomous wireless communication subframe; means for determining (1230) one or more types of information to be transmitted in the uplink common burst symbol; means for selecting (1235) one of a single carrier frequency division multiplexing transmission waveform, SC-FDM, an orthogonal frequency division multiplexing transmission waveform, OFDM, or a waveform of mixed transmission of SC-FDM and OFDM for transmission of the uplink common burst symbol based at least in part on the one or more types of information to be transmitted in the uplink common burst symbol, wherein when SC-FDM transmission waveform is selected for transmission of the uplink common burst symbol, the transmission comprises means for selecting (1235) a sequence (505) from a set of sequences (505, 510, 515, 520 ) based at least in part on the information to be transmitted in the uplink common burst symbol, said sequence (505) identifying said information, and wherein the different sequences of the sequence set s (505, 510, 515, 520) correspond to different cyclic shifts of a basic sequence; and means for transmitting (1220) the uplink common burst symbol. 15. An apparatus (1605) for wireless communication, comprising: means for allocating (1625) uplink common burst symbol resources to a user equipment, UE, for transmission of one or more types of information in an uplink common burst symbol in an autonomous wireless communication subframe; means for identifying (1630) a set of transmitting waveforms available for transmission of the uplink common burst symbol, wherein the set of transmitting waveforms comprises one of a frequency division multiplexing waveform single carrier, SC-FDM, an orthogonal frequency division multiplexing waveform, OFDM, or a mixed transmission waveform of SC-FDM and OFDM and each transmission waveform from the set of waveforms of transmission is associated with one or more types of information to be transmitted in the uplink common burst symbol, and wherein when the SC-FDM transmit waveform is selected for transmission of the uplink common burst symbol uplink, the transmission comprises selecting a sequence (505) from a set of sequences (505, 510, 515, 520) based at least in part on the information to be transmitted in the burst symbol uplink common, said sequence (505) identifying said information, and wherein the different sequences of the set of sequences (505, 510, 515, 520) correspond to different cyclic shifts of a basic sequence; means for receiving (1610, 1635) the uplink common burst symbol from the UE; means for determining (1640) the transmit waveform of the uplink common burst symbol and, when using the SC-FDM transmit waveform, a cyclic shift of a sequence in an SC-waveform FDM; and means for determining (1645) the information included in the uplink common burst symbol based at least in part on the determined transmit waveform and, when the SC-FDM transmit waveform is used, the offset cyclic sequence of the SC-FDM waveform of the uplink common burst symbol.